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Diiron Butane-1,2-dithiolate Complexes with Phosphine Ligands: Preparation, Crystal Structures, and Electrochemical Catalytic Performance
Author NameAffiliationE-mail
LIU Xu-Feng School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, Zhejiang 315211, China nkxfliu@126.com 
XU Bo College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, China  
XU Hang College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, China  
LI Yu-Long College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, China  
Abstract: Treatment of the parent complex [Fe2(CO)6( μ-SCH2CH(CH2CH3)S)] (1) with tri(2-furyl)phosphine, n-propyldiphenylphosphine, bis(diphenylphosphino)acetylene, or 1, 2-bis(diphenylphosphino)benzene and Me3NO · 2H2O as the decarbonylating agent yielded the monosubstituted complexes [Fe2(CO)5(L)( μ-SCH2CH(CH2CH3)S)] (L= P(2-C4H3O)3, 2; Ph2PCH2CH2CH3, 3), bridging complex {[Fe2(CO)5( μ-SCH2CH(CH2CH3)S)]2(Ph2PC≡CPPh2)} (4), and chelating complex [Fe2(CO)4(κ2-(Ph2P)2(1,2-C6H4))( μ-SCH2CH(CH2CH3)S)] (5), respectively. Complexes 2-5 have been characterized by elemental analysis, IR, and 1H (31P{1H}) NMR spectroscopy, as well as confirmed by single crystal X-ray diffraction analysis. Moreover, the electrochemistry of complexes 2-5 has been studied, showing that these complexes can catalyze the reduction of proton to H2 in the presence of a weak acid HOAc as a proton source.
Keywords: [FeFe]-hydrogenases  diiron butane-1,2-dithiolate  crystal structure  electrocatalytic H2 production
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LIU Xu-Feng,XU Bo,XU Hang,LI Yu-Long.Diiron Butane-1,2-dithiolate Complexes with Phosphine Ligands: Preparation, Crystal Structures, and Electrochemical Catalytic Performance[J].Chinese Journal of Inorganic Chemistry,2022,38(12):2521-2529.
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Chinese Journal of Inorganic Chemistry